Excess of Social Behavior Reduces the Capacity to Respond to Perturbations
David Mateo, Yoke Kong Kuan, and Roland Bouffanais

TL;DR
Excessive social interactions in collective systems can impair their ability to quickly respond to rapid changes, despite generally enhancing adaptability to slow variations.
Contribution
This study demonstrates that beyond a certain point, increased social connections diminish a swarm's responsiveness to fast perturbations across different models.
Findings
Responsiveness decreases when social interaction exceeds a threshold.
Increased social interaction improves adaptation to slow changes.
Excess social behavior hampers quick responses to fast perturbations.
Abstract
Social interaction increases significantly the performance of a wide range of cooperative systems. However, evidence that natural swarms limit the number of social connections suggests potentially detrimental consequences of excessive social activity. Using a canonical model of collective motion, we find that the responsiveness of a swarm to local perturbations is reduced when the social interaction exceeds a certain threshold. We uncover a similar effect for two distinct collective decision-making models of distributed consensus operating over a range of static networks. While increasing the amount of interaction always increases the capacity of these systems to adapt to slow changes, an excess of social behavior can hinder the swiftness of their response to fast perturbations. These results have far-reaching implications for the design of artificial swarms or interaction networks.
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Taxonomy
TopicsEvolutionary Game Theory and Cooperation · Complex Network Analysis Techniques · Opinion Dynamics and Social Influence
